Carnival begins as early as 3 Kings Day (Jan 6) and ends on Shrove Tuesday
(Shrovetide), the day before Ash Wednesday, which is the first day of Lent.
Usually the last four days
(Saturday through "Fat Tuesday") have the biggest celebrations, but customs
vary from country to country. For example, in the Dominican Republic, there
are celebrations each of the four Sundays before Carnaval Tuesday.
In some
countries the celebrations continue through Ash Wednesday. In the Dominican
Republic they last until February 27th, Independence Day.

Boxing Day is also celebrated in the former and present British colonies in
the West Indies: Jamaica, Bahamas, Trinidad and Tobago, Bermuda, Barbados,
Antigua and Barbuda, St. Kitts and Nevis, St. Vincent and the Grenadines, etc.